Portable humidifier



FIG. 1 is a perspective view of a portable humidifier showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a exploded perspective view thereof, shown the cover is out of the body.

The broken lines in the drawings depict environment and form no part of the claimed design. 

CLAIM The ornamental design for a portable humidifier, as shown and described. 